. Elementary entomology . n FIG. 30. Section through skin of a beetle (Chrysobothris] b, basement membrane ; c>', primary cutic- ula; <:-, secondary cuticula; /i, hypoder- mis cell; n, nucleus. (After Tower, from Folsom)
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Keywords: ., bookpublisherbostonnewyorketcginnandcompany, booksubjectinsects